package servlet.XMLTree;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.netscenery.yang.model.DataDefElement;
import com.netscenery.yang.model.Module;
import com.netscenery.yang.model.Node;

import offer.ConvertToJson;
import offer.GetDataSource;
import offer.GetNodeFromModule;



public class LoadModuleTreeServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public LoadModuleTreeServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/json; charset=utf-8");
		request.setCharacterEncoding("utf-8");
		response.setHeader("Cache-Control","no-cache"); 
		String   nodeLevel    =  request.getParameter("nodeId");   //ͨ������������ҽ��
		String   moduleName   =  request.getParameter("moduleName");
		String   moduleType   =  request.getParameter("moduleType");
		String[] levels       =  nodeLevel.split("\\\\");
		PrintWriter out = response.getWriter();
		Module mainModule =      GetDataSource.getDataRead(request);
		Module treeModule = null;
		if(moduleName.equalsIgnoreCase(mainModule.getName())){
			treeModule = mainModule;
			
		}else if(null != mainModule.getEnv().getModules() && moduleType.equalsIgnoreCase("MainModule")){
			for(int i = 0 ; i < mainModule.getEnv().getModules().size(); i++){
				if(moduleName.equalsIgnoreCase(mainModule.getEnv().getModules().get(i).getName())){
					treeModule = mainModule.getEnv().getModules().get(i);
					break;
				}
			}
		}else if(null != mainModule.getEnv().getSubModules() && moduleType.equalsIgnoreCase("SubModule")){
			for(int i = 0 ; i < mainModule.getEnv().getSubModules().size(); i++){
				if(moduleName.equalsIgnoreCase(mainModule.getEnv().getSubModules().get(i).getName())){
					treeModule = mainModule.getEnv().getSubModules().get(i);
					break;
				}
			}
		}
		ConvertToJson toJson = null;
		//��ڵ��
		String jsonStr = null;
		if(null != treeModule){
			if("Module".equalsIgnoreCase(nodeLevel)){
				toJson = new ConvertToJson(treeModule);
				jsonStr = toJson.getModuleTree();
			}else{
				ConvertToJson json = new ConvertToJson();
				DataDefElement itemNode = GetNodeFromModule.getDataDefByLervels(treeModule, levels);
				String levelStr = "";
				for(int i = 0 ; i < levels.length ; i++){
					levelStr += levels[i];
					if(i != levels.length -1){
						levelStr += "\\\\";
					}
				}
				if (itemNode instanceof Node){
					jsonStr = json.getChilds((Node) itemNode, levelStr);
				}
				
			}
		}
		
		out.write(jsonStr);
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/json; charset=utf-8");
		request.setCharacterEncoding("utf-8");
		response.setHeader("Cache-Control","no-cache"); 
		String   nodeLevel    =  request.getParameter("nodeId");   //ͨ������������ҽ��
		String   moduleName   =  request.getParameter("moduleName");
		String   moduleType   =  request.getParameter("moduleType");
		String[] levels       =  nodeLevel.split("\\\\");
		PrintWriter out = response.getWriter();
		Module mainModule =      GetDataSource.getDataRead(request);
		Module treeModule = null;
		if(moduleName.equalsIgnoreCase(mainModule.getName())){
			treeModule = mainModule;
			
		}else if(null != mainModule.getEnv().getModules() && moduleType.equalsIgnoreCase("MainModule")){
			for(int i = 0 ; i < mainModule.getEnv().getModules().size(); i++){
				if(moduleName.equalsIgnoreCase(mainModule.getEnv().getModules().get(i).getName())){
					treeModule = mainModule.getEnv().getModules().get(i);
					break;
				}
			}
		}else if(null != mainModule.getEnv().getSubModules() && moduleType.equalsIgnoreCase("SubModule")){
			for(int i = 0 ; i < mainModule.getEnv().getSubModules().size(); i++){
				if(moduleName.equalsIgnoreCase(mainModule.getEnv().getSubModules().get(i).getName())){
					treeModule = mainModule.getEnv().getSubModules().get(i);
					break;
				}
			}
		}
		ConvertToJson toJson = null;
		//��ڵ��
		String jsonStr = null;
		if(null != treeModule){
			if("Module".equalsIgnoreCase(nodeLevel)){
				toJson = new ConvertToJson(treeModule);
				jsonStr = toJson.getModuleTree();
			}else{
				ConvertToJson json = new ConvertToJson();
				DataDefElement itemNode = GetNodeFromModule.getDataDefByLervels(treeModule, levels);
				String levelStr = "";
				for(int i = 0 ; i < levels.length ; i++){
					levelStr += levels[i];
					if(i != levels.length -1){
						levelStr += "\\\\";
					}
				}
				if(itemNode instanceof Node){
					jsonStr = json.getChilds((Node) itemNode, levelStr);
				}
				
			}
		}
		
		out.write(jsonStr);
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
